function get_sirka(){


    var toppanel = document.getElementById("toppanel");
	var symboly = document.getElementById("symboly");
	var slama = document.getElementById("slama");
	var sirka = screen.width;
	var sirka_symboly = screen.width-240;
	var sirka_slama = screen.width-949;
   	toppanel.style.width = sirka+'px';
	symboly.style.width = sirka_symboly+'px';
	slama.style.width = sirka_slama+'px';
    
    /*
     
     var top_panel = document.getElementById("toppanel").style.display;
     top_panel = 'none';
     
     alert(top_panel);
     var sirka = screen.width;
     */
}